Oil-guard for dynamo-electric machines.



J. E. WBSTER.

OIL GUARD FOR DYNAMO ELECTRIC WIACHFNES.

APPLICATION HLED DEC. 3. |906.

Patented, Apu 3, 1915.

INVENTOR 2 SHEETS*SHBET 1.

BYQQQ/@m AT URNEY I. E. WEBSTER. OIL GUARD FOR DYNANIO ELECTRICMACHINES.

APPLICATION- FILED DEC. 3, 1906.

Patented Apr. 13, 19M.

2 SHEETS-SHEET 2.

@if z.

WITNESSES: y INVENTOR i 1 M `1: crib.

JOHN E. WEBSTER, F PITTSBURGH, IENNSYLVANIA, ASSIG-NOR T0 WESTINGHOUSEELECTRIC 8a MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

OIL-GUARD FOR DYNAMO-ELECTRIC MACHINES. i

Specification of Letters Patent.

Patented Apr. 13, 1915.,

Application `lef December 3, 1306. Serial No. 346,082.

l a citizen of the United States, and a resident of Pittsburgh, in thecounty of Allegheny and State of Pennsylvania, have 1nvented a new anduseful Improvement 1n Oil-Guards for Dynamo-Electric Machines, of whichthe following is a specification.

My invention relates to dynamo-electric machines, and has specialreference to electric driving motorswhich are adapted for use withrailway vehicles.

The object of my invention is to 'provide simple and effective means forpreventing the lubricating fluid, used in the axle bearings, fromoverflowing onto the road-bed or other external objects, withoutinterfering with the lubrication of the rotating parts.

ln the accompanying drawings, Figure 1 is a sectional elevation throughthe center of a truck axle upon which a motor is supported by relativelystationary bearings, and Fig. 2 is an end elevation of the motor shownin Fig. 1, the axle being in section.

Referring to the drawings, a rotatable truck axle 1. supports a pair ofsimilar bushings 2 and 3 that are stationary, relative to an electricmotorilwhich is suspended therefrom and which is attached thereto by`means of axle caps 5 and 6. The axle 1 is provided with a driving gear.7 which is engaged by a pinion keyed to the armature shaft of the motorin accordance with the usual practice and the engaging gears areprotected, in the usual manner, by a stationary gear case 9. The innerends of the bushings 2 and-3 are provided with annular grooves 10 and 11and annular projections or oil rings 12 are fixed to the axle 1 so as tooperate substantially in the centers of the grooves 10. The outer endsof the bushings are provided with flanges V13 in which annular grooves14 are cut. The flange 13 of the bushing 2 is adjacent to a portion 16of a truck wheel 17 that is provided with an annular groove 18. TheHarige 13 on the bushin 3 is adjacent to thehub of the gear 9. ,nannular projection 19 is formed on the hub projectionlfi of the wheel 17between the annular groove 18 and the flange 13 of the bushing 2. Theaxle cap 5 is fitted over the bushing 2 to engage the inner surface ofthe flange 13 and 1s provided with an oil guard 20 that projects beyondthe inner extremity of the bushing 2 and is adapted to receivelubricating fluid which may escape from this end of the bushing. rlhebulk of the oil, which .would otherwise flow out of the inner end of thebushing 2, will be thrown from the ring 12 into the annular groove 10 asthe axle rotates. The groove 11 is connected with the groove 10 bya-cross slot 11 and the lower part of the groove 10 communicates withthe space inclosed by the oil guard 20 through a hole or opening 21 inthe bushing 2. The inner end of the bushing 3 is similarly provided withan oil guard which is adapted to receive the excess lubricating .fluidfrom this end of the bushing. The oil guards on the inner ends of thebushings are located only at the lower part of the axle caps since theyreceive oil only from stationary parts. At the outer end of the axle cap5, an oil guard 22 is provided which extends beyond the annularprojection 19 on the wheel 17. This projection, l

in conjunction with a detachable semicircular guard 23, forms a completeannular groove which is adapted to receive the excess lubricating fluidwhich may escape from the outer end of the bushing 2 and which will bethrown from the annular projection 19, by centrifugal force, when theaxle is rotating.

The lubricating fluid is prevented from. escaping from the outer end ofthe bushing 3 by'reason of the gear case 9 which is stationary andwhichis provided with a projection 241 that extends from the middle ofthe projection 13 and is sealed to the annular groove 14 in the bushingby any suitable packing, such as a strip of felt. rllhis joint mayreadily be made oil tight .since the two parts are relativelystationary.

It may be preferable in some motor dep to and I desire that onlysuchlimitations be imposed as are indicated in the appended claim.

annular projection, the groove in said [lange being located radiallyWithin the inside edge of said Stationary guard to prevent the return ofsaid fluid beyond said flange.

In testimony whereof, I have hereunto subscribed my name this 28th dayof .'November, 1906.

JOI-IN E. WEBSTER. Witnesses:

OTTO S. SCHAIVER, BiRNEY HINES.

